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matrix_check_sum #6

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matrix_check_sum #6

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17 changes: 16 additions & 1 deletion lib/matrix_check_sum.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -3,5 +3,20 @@
# of numbers in row i is the same as the sum of numbers in column i for i = 0 to row.length-1
# If this is the case, return true. Otherwise, return false.
def matrix_check_sum(matrix)
raise NotImplementedError
n = matrix.length

n.times do |i|
sum_row = 0
sum_column = 0
n.times do |j|
sum_column += matrix[i][j]
sum_row += matrix[j][i]
end

if sum_row != sum_column
return false
end
end

return true
end